“On the Sabbath day, there shall be two male lambs a year old without blemish, and two-tenths of an ephah of choice flour for a grain offering, mixed with oil, and its drink offering. This is the burnt offering for every Sabbath, in addition to the regular burnt offering and its drink offering.”
Something more is done on the Sabbath, another sacrifice of 2 lambs in addition to the regular offerings. However, this sacrifice is not mentioned any other place in the Torah.
Eugene Finnegan Bible Project 